many face a lot of problems to start with seedboxes..., we need a complete tutorial. Even i dont know how to use..so i'm running away from it.
Generally if we start with smaller ones.. i guess we need to do all the initial installation stuff like plugins, autodl - irss,..., custom things etc.., i could not find anything related this.
as they are mostly linux or other based systems.. so where and what commands to use..., this is somewhat complicated...

can anyone take some time to explain this things...

honestly, unless someone wants to lead the entire seedbox tutorial it aint going to happen.
different providers, different kernels, all lead to different issues.
i use github for most of my scripts and youtube or google. it wasnt hard to find what i needed in a few minutes.
if you are looking for more customization then i would post what you are trying to do and hopefully someone else has done it and can help you.