Played the training missions to the advanced fight training part so far and I can't beat the second half of that.
Whatever I do, no matter what, I can't get this 2 ships in front of me, they are always behind me no matter if I boost, stop, turn, whatever.
I think I will skip that part, what kind of magic do I need to beat them?
Three options if you can't get sight of an enemy:
1) Put throttle in blue zone and divert 4 power pips to engines with 2 to shields. This should be enough, but your shields will go down quickly if they have few power-pips assigned. Probably the best option when your ship is quite fast and manoeuvrable. When pulling up to outcircle an enemy you can hit the down thrusters to make a 'bigger' circle (gets the enemy in your sight quicker, but you'll also be putting yourself in their sights quicker).
2) Go blue zone in reverse, 4 pips on shield and 2 on engines. This will make it much easier to get the enemy in sight, but it'll come down to a straight contest of who has the most firepower and shields. Once they're in sight divert engine power to guns. The enemy AI has been improved so it's not as vulnerable as it was to this tactic, but it still works. It's the best option if you have a much stronger ship and don't want to waste time "swatting a fly" and also if you're heavily outnumbered. When outnumbered, the top priority is to kill some enemies quick.
3) FA-off. This is usually more like option 2, but you're drifting backwards or circle-strafing. Boosting into an FA-off turn can help get you in position for option 2 quickly. Avoid using much roll with FA-off since you'll go into a spin. Put FA back on when you need more accurate control. I tend to use FA-off for a quick "powerslide". I could never use it full-time during combat.
Oh, and use gimballed weapons unless you're a crazy person. Fixed mount weapons are not much use unless you're hunting 'big game'. If the enemy uses chaff, you can deselect your target and "use the force" to fire the gimbals are a 'fixed' weapon.
Pulse lasers and multicannon are probably the best all-round weapons despite being the cheapest. Other weapons can be useful, but they aren't as versatile and have big drawbacks (either low ammo, fixed mounts or energy drain). Given the length of most fights, burst and beam lasers are usually too inefficient, especially on starter ships with shitty power distributors.
Rockets can be great, but remember they do practically nothing to shields. Chaff does not affect rockets!
Oh, and for people worried about being "forced" online:
Solo mode only is only "online" to ensure it knows the state of the shared world (e.g. trading prices and what systems are in war or famine). You can even contribute to 'Community Goals" while offline. It basically just tells the game to create a unique instance for you and not let anyone join it. Many players are exclusively in solo mode.
You can switch between online and offline at any point and use the same 'save' for both.
In online mode, the game looks for an existing instance in your current system and adds you to it if there is space (I don't know the max players per instance). I generally only go online if I'm flying something I can afford to lose. Make sure you understand how to survive interdictions and always obey station speed limits if other players are around (if you accidentally kill a player or if some idiot rams you while you are speeding, you're wanted for manslaughter and the station defences will slaughter you).
There are also private groups for friends and various communities like the Mobius PvE group (where I usually fly). Again, it uses the same world.