Good news: You have one of the most undertiered jets currently, bad news: top tier is A LOT to learn.
I will go through some basics in no particular order so you know where to start.
Loadout
You are spoiled for choice here, many good options. However, I would personally recommend going for a simple loadout to begin with.
- Do not take bombs, only missiles. If you bomb you might see better earnings short term, but it will only be more boring and less rewarding long-term
- Take 6x PL-12 (Radar)
- Take 4x PL-8B (IR)
People could argue for R-27ER1, R-27ET1, or even RRV-AE missiles instead of PL-12, and they could be right for some people. However, PL-12 are all around simply great missiles for all occasions and easy to use. Good to get started with. If you are curious about expanding your missile kit I would first recommend testing the R-27ET1, they can allow for some long range snipes on unaware players.
As for outer pylon IR missiles, it is a hard choice. R-73E turn insanely well, and they have good overall performance, but they are slow. PL-8B turn less, but are super fast. Feel free to switch between these without worry.
Notching
This is a surprisingly deep topic, however there are some GREAT videos describing the subject online. I would particularly recommend MiGan Fox-3. Well worth your time: https://youtu.be/LmVO-hBJSWQ (Same video as other poster)
What does not get said much explicitly, but is deadly important is that you NEED to have your lookaround-key (c by default) bound to something good and USE it. This also means you NEED to have keybindings to control your plane while looking around. Your gameplay, notching included will improve a lot if you can manage to look around while piloting.
Playstyle
You essentially have two choices here, play high and orbital strike people, or play low and dodge missiles. I like to view these choices as high risk, high reward and low risk, low reward, respectively.
Playing high (~5-8km) can net you a lot of kills from unsuspecting targets, but you NEED to be able to notch to survive, because that is the only way to dodge radar missiles.
Playing low (20-50m RALT) can make you basically immune to radar missiles, due to the multipath effect in warthunder. This is a bit easier for new players compared to notching, but you simply get less opportunities for kills while low. I would overall recommend this playstyle while you get used to flying, your radar, your RWR, how to use missiles and looking around. Fly high once you are more confident in flying your plane and notching.
Flying anywhere between 150m and ~4km is generally not recommended as it gives you all the downsides of flying high (harder to dodge missiles) while granting you less of the upsides (you cannot orbital strike people as easily). People will also spot you easier if you play somewhat high as opposed to really high.
Crew
You should prioritize Stamina and G-tolerance primarily. These are essential to fully use your flight performance. Keen vision is also very important, for spotting missiles and enemies. The rest are not as important.
I would rank the crew skills in the following order:
- G-tolerance
- Stamina
- Keen vision
- Awareness
- Repair time/repair rank
- Rest of the skills
Radar, RWR and missiles
You cannot play 13.3 without fully learning to use your radar, RWR and missiles. This is quite complicated, with many keybinds, but it is well worth it.
The gold standard videos for this are the Tim’s variety guides as mentioned by Kingskofi: