Well not all about being evil or lazy. honestly, many of us learned all by ourselves, of course we can sit and teach but then a few remember how hard was to them no one was around to teach so one or two had to learn alone, getting killed,getting bullied,dealing low damage,getting the wrong tanks,looking for some pieces of info here and there and creating for itself enough knowledge of the game.
A few people do "Sit and help" but others don`t even bother to do because they think that person will learn alone like their did. I will not even talk about the people that sometimes jump on the backs of some experienced players and tend to send private message to them every minute, asking for help, "platoon with me,help me to get some missions done,help with heroics,help me with spec ops" this tend to make some people to keep away from help.
On forum and discord you will always find some people that will "Help" and people that will "Show you the way" is up to you if his/her will be added to your knowledge or if you will just look for someone that will grab your hand and teach you how to walk, i describe myself as a Helper instead a Teacher/Coach. i have 15 years of tank gaming exp if i mix AW,WT and WOT. I never say no to help someone that wants to know something.
So with all of this that i said, i hope that can give an idea of how to ask for help, it will be tough at the start, but if you keep moving forward the game itself will teach you slowly, in the best way and of course always look to some guides on forum/discord, we are here to "Show you the way" and its you that will going to walk it.