New people playing this game are probably overwhelmed by a sheer amount of content Mobius FF Steam version currently offers, and with FFVII Remake event to make it up, it'll be quite a challenge. Fortunately, this team from SE has made new changes to the system since Cloud is now part of a Permanent job, albeit through RNG. I'll just make a few lists of things to do:

1) Stamina - For starters, Stamina at the early levels might be something to complaint first hand but rest assured, you gain an additional 1 Stamina as you level up. If possible, save up Elixirs for higher levels. You'd need it more once you start farming for mats.

2) Magicite Distiller - Every 16 hours, you'll get 100 Magicite, drain it everytime it reaches 100 or if possible, drain it as often as you can. The flaw of this version of Mobius is that you can't farm Magicites unlike JP version but Multiplayer offers 5 (or was it 10?) Magicite per run if you meet someone new to the Multiplayer; the chance of this is zero to slim. Sometimes, you'd be in a bind whether or not you'd want to spend real money on this. That's entirely your decision.

3) Job Cards - Every new Blanks start with 3 starter jobs: Onion Knight, Apprentice Mage and Neophyte Ranger, this cards has access to other jobs inside the Skill Panel. While this is good, it won't be for the long run so if you have enough Magicite to spend on, grab the opportunity to get a new one off the Summon Shop. Aside from SOLDIER 1st Class, which you can only get through 3* and 4* Summon, the rest you can get as guaranteed and won't be duplicated so there's no 2 of the same jobs. Each job has its own set of Elemental affinities.

4) Ability Cards / Augmenting - This has different range of selection but the best cards starts at 3*. Any lower than that is basically a "Fodder" card, you'd need this to fuse any Ability Cards that has the same Ability name (1* and 2* are just the Lesser versions of the actual one). Upgrade/Augment it whenever possible because some monsters drop materials. Unlike an actual Ability Card, Fodders only maxed at 3* and never higher. Augmenting 3* to 4* requires you to have 2 Growstars (you'll obtain it through the Daily Gifts which you need to finish all 16 days to get 1) while 4* - 5* requires you to farm for Pneuma, which you can get through Pleiades Lagoon. Unless you have a pass, each day has a different Element to farm and the monsters here are no pushover, especially on the 3rd Node).

5) Elements - At the very start of the game, you'll be given access to only 4 Elements: Fire, Water, Wind and Earth. Dark and Light will only be available once you have access to Chapter IV. It's self-explanatory on how to counter elements.

6) Skillseeds - Each time you finish a Battle sequence, you'd be given an amount of skillseeds, this skillseeds you get follows according to what Cards you bring for your Job Card (scroll on them for more info). To unlock most of the Job Cards' Skill Panel, you'd need to farm for them. You'd have more once you unlock Gigantuar Terrace.

7) Daily Gifts and Dailies - Yes, this game has Dailies. Grab the items and do the Dailies, finishing them rewards you with 1x Mystic Tablet and Ability Ticket.

This is probably it for now, I might miss some more vital parts but I can't think of any at the moment. Mobius Reddit offers more information so you can check for anything there. If you can't get higher up the rankings, don't worry, you'll get there but the first 10 are filled with hackers so don't bother too much about why you can't get within 10% of rankings lol. I'd say this game is 2% - 3% P2W but if you stick with F2P roots, should be fine. Before Cloud, we had 4 more Legendary jobs before but costs USD75 each and we don't know if these jobs are coming back in the future.