Need end game advice and how to essentially end game

[Erakir]

You won't be high enough ilvl to queue for many of the things listed above once you hit 70 - first you'll have to work on that. As mentioned, you can buy crafted pieces off the marketboard if you have the gil. On my server, can generally say a piece will cost a million gil. The most recent crafted sets are i380. If you're not able to afford much but can buy something, a crafted weapon might be a good investment as getting weapons is a bit more annoying at first than getting armor.

Aside from crafted sets, you'll probably gear up in a combination of the following methods. First let's talk tomestones.

At level cap in XIV there are essentially two tomestone currencies in use. The current one, which is capped at 450/week, is Genesis Tomestones. Then there's the previous patch's tomestone, Mendacity, which have no weekly cap. (There's also Poetics Tomestones used for a variety of things, but not usually for gearing up at max level).

Nearly everything you do will give you Mendacity in some way shape or form if queued for at Max Level. You can use these tomestones to buy the previous patch's tomestone gear in Rhalgr's Reach, which is i360 by default and can be upgraded to i370. Some people join Hunt linkshells to kill Hunt marks to farm uncapped tomestones, but there are lots of ways (I've never entered Eureka/Pagos so if that's an option someone feel free to mention it - I don't even know if it has an ilvl requirement).

If you want, you can fully gear yourself up to queue for a lot of things via mendacity tomestones.

Genesis tomestones reward i390 gear that is upgradable to i400 (currently only through savage raiding), but it's limited per week.

As you accumulate both Genesis and Mendacity tomestones, use them to start gearing yourself up. Weapons are highest priority but need certain tokens obtained from the 8 man raids, Chests and Legs are next in terms of oomph per stat. However, accessories are the cheapest and bump your ilvl up, so if you want to brute force your way past some old ilvl requirements that can be an option.

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Dungeons and Raids -

We're currently in the third raid tier of this expansion. I suggest unlocking the raids as you can, as you'll have to do the previous two 8-man raid tiers to unlock the current tier. There are also 24-man raids and I highly suggest finding and doing them. They are meant to be casual friendly content. Some story and dungeons are locked behind dungeons, so might as well do them and pick up any upgrades along the way, but they're not gonna be any long term pieces. In particular, once you unlock the second 24-man raid, the gear there is i360, equal to the mendacity gear. Via these raids are also tokens that will allow you to ultimately upgrade mendacity gear to 370, so once you're able to do the second 24-man, it's a good option to continue bringing yourself up to par.

The previous 8-man raid tier (on normal) will drop tokens that can be used for i350 gear. Feel free to supplement your gearing process with these, but again, first you'll have to unlock this tier and have the minimum ilvl to queue for it. Of note, the final boss of this tier drops a token that, along with 1000 mendacity, can be used to purchase a i360 weapon. I don't remember how many tokens it is, 4 or 7, but it's an option for weapons.

The current 8-man raid tier (on normal) will drop tokens that be used for i380 gear. Much of the playerbase is currently here - replacing 370 gear with new 380 pieces, and you could be here quickly via mendacity. Same thing with the final boss dropping a token that can be used to get a weapon, only it needs 1000 GENESIS tomestones and 7 kills (only one token per week for this) - so a lot of players are just waiting on that 7th week for their weapon right now.

But let's talk weapons, you've got a couple of options there.

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Weapons.

Aside from progressive dungeon drops that are pretty meh, you can quickly buy a crafted weapon, farm previous raid tiers for the 1000 mendacity weapon (i360 and upgradeable to i370), or look to do an extreme primal. Ex Primals are good training grounds for Savage Raiding in FFXIV. However, since weapons are so important, it's gonna be rough to get into an extreme primal party without buffing the rest of your gear up and upgrading your weapon in some way, shape or form. The current Extreme drops i385 weapons and a token (10 of them buys a weapon of your choice so it's not RNG forever).

I'm not knowledgeable on the current Relic weapon via Eureka/Pagos. That might be an option but with all the horror stories, I don't know how feasible it is starting now compared to your other options. Someone familiar with the process may be able to elaborate!

Another option is to unlock Heaven On High, which you might have already been doing. You have a different weapon/armor set in there, and it levels up as you open chests/clear boss floors. You can continuously level them both down by 10 to create an item, and 10 of these items can be used to get an i365 weapon of your choice. This is convenient because your character's ilvl has NO bearing whatsoever in there. You'll start out weak, but before long your weapon/armor in there will be level 30-60 and you can keep doing it, leveling back up to something like 60 and dropping the gear down to 50 for a token. You may want to look into this, as it's a way to get a weapon without needing to increase your ilvl at all. This combined with mendacity tomestones (and the latest 24-man) is a surefire way to get your ilvl up to the 360s, which will easily let you join most max-level content at the time that opens the gateway to getting good enough gear to start savage raiding. Heaven on High also rewards tomestones (30 Genesis 50 Mendacity per run), so it can be a win/win if you feel like doing it for several hours. It's also something that can be done with any party composition and people use it for leveling, so you won't necessarily have to wait long for queues as a DPS.

Edit: Directly quoting a friend who just came back last week:

The heaven on high one is really useful

Thanks to that, I got my i365 weapon, and in about three days worth of just doing it for 1-2 hours a day I got enough genesis to get my 390 chest piece

Then searching the markets... I found some 380 necklaces for 400k... kind of a steal since everything else was over 1 mil so bought that just for a quick boost. One of the dungeons I ran actually dropped 350 gear, so nothing to right home about, but it helped bring my ilevel up enough to do the new raid and Omega so I could work on better gear

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How endgame raiding and gearing works in general is another topic, this post was mostly to give an idea of some ways to get your ilvl up to speed so you can participate in the newest content to begin with, but it's true that current endgame gearing involves the current Extreme for a 385 weapon, farming the current 8-man for 380 gear and tokens for an eventual 390 weapon, and either 370 gear (max from last tier) or crafted 380s. If you're really looking at progression raiding, that involves crafted sets of 380 with pentamelded materia, which is a hefty amount of gil to do for a bunch of pieces.