well the example with ので is good, you could treat it as since. "since I have returned from school, I will do homework" から by it self means from, だから　(casual)　ですから(polite) means because.お菓子を食べた、だから好き。 means I ate candy because I like it. お菓子が好きので、食べた。Since I like candies, I ate it. Hope this helps.

I think you want to know like these sentences.For example,学校から帰ったので、宿題をする。This means I came back home,so I'll do my homework.Fornt of から　put in place or time,and after から,you put in movement or action. ので　means because or so. So after ので、you make some reason of these front of the sentences.