Engineering & Materials:
After the initial excitement of coming back is down a bit, you've enjoyed it and you're sure you're staying to play for a long time - plan 3 evenings (or whenever your play-time is) and do a farm for all engineering/synthesis materials, 1 evening each. It may seem like a dedication to something boring, and it is the most boring part of the game (even with latest improvements to significantly lessen the time needed to do it) - so getting it out of the way sooner will make the rest of the game much much more fun with a very little to distract from that fun.
Raw materials &
Video for all materials.
Tip: I find it much quicker to do a Data farm in a ship, without going into SRV, as right now it is simply Drop in -> Scan once -> Relog -> scan a Second time -> go to a Encoded Material Trader in Diaguandri ->Repeat.
Inara is your friend.
If you don't have all Engineers unlocked - you may need to spend another evening to partially redo the farm. Farm -> Unlock -> Re-farm to full. Ohh, and if you want to unlock a lot of new (best) FSDs for many ships - it could drain some of your Encoded and Raw materials rather quickly, so might need to adjust for that.
Ability to just engineer any ship/fit you'd like to try/use without farming every time - one of the best QoL you could do yourself. After that initial loop of farm, you could easily top up materials that you'll be spending by just playing the game (mission rewards, PP care packages, etc.).
The only other farm that you might want to plan the same way -
Guardian Data, as it is the least fun of any farms that left. Guardian Blueprints and Mats, Anti-Guardian Zone resistance and Thargoid mats, Mbooni permit and Modded Guardian weapons... all these are quite fun. Even Odyssey personal equipment upgrades are good fun, especially if you remove a part of it with
pre-engineered equipment you can just buy.
Credits for anything (initial equipment purchases and stuff) are very easy with an evening or two of Exo-biology around/near the bubble (and a good first try of the feature if you might like it), so just search for the list (
example &
how to) and go.
Have fun flying & using whatever you might want to build!