I haven't played since Melee 2.0 was a month old or so. Is there a way to go through the tutorial again?
What's this ship I'm in?
How do I know what planets are beginner and which ones are expert? I know void and europa are hard but I can barely tell where I'm supposed to go on the map.
Why can I go to some planets but yet the 'gates' or whatever want me to do some vague checklist?
I have all of Venus completed, what the hell is a exemius it wants me to do to leave??
I remember their used to be special events, they used to be right there on my screen, does the game not do them anymore because it has enough base content now or something?
The tower was tons of fun because the environment looked great and killing waves of bad guys was great too. Where did it go? My friend said it's in the void but it'll take weeks of me playing the game to get all the way there from the star map...
I have the Karak right now, I remember the next step up was a weapon that had some round circle thing on it, what's it called?
No way I know of to go through the tutorial again. The ship you're in is yours, and it's where you do all your mod fusing, crafting, equipment setup, that kind of stuff. It's given to you after you do the introduction mission, and then you do more missions to unlock its various functions, most of which you probably already have since you played the game already.
Generally, the further you get away from the sun in relation to our actual solar system, the harder the planet. You can also go by the enemy level marked on the missions, but that's only somewhat helpful once you get a feel for what that number even means. What level of enemies you can handle depends almost entirely on how much you've upgraded your basic mods, and it's not really something we can easily tell you, "you should be here right now because you played this much."
Since you played the game before this latest map system, you still have access to planets you unlocked through completing the assassination missions in the previous map system. Junctions are the new way of unlocking more planets, but you can (and should) go back to complete junctions that would unlock planets you can already get to, just so you get the other rewards shown.
Eximus enemies are like champion enemies from Diablo, if you're familiar with that. They're more powerful, have a bit of a glow to them, and have special effects or auras such as throwing out rings of fire or slowing down the area around them and protecting themselves with a globe. They can just appear randomly in missions.
There are still special events. We just got done with one pretty much. They don't happen that often.
The towers are now just the void "planet" on the map now. I liked the void too, but pretty much everyone got tired of having to go there constantly to farm prime parts. So while not as many people may be going to the void now, it's still around, and it's still worth going to if you need its mods or argon crystals. It will take work to unlock all the void missions now, as there are three ways to get to the void, each of which offer three missions in the void.
Since you have the Karak, you're maybe referring to the Soma. That seems like the logical next step to me.