1.Learning on your own is more difficult, but it works out.
Get a book for learners with a CD. If you have a microphone and you can record the CD and your own pronounciasion it is a help. Read children´s books, then for young people and continue as you knowledge developes
2. There are women who talk and talk and never listen, which means they do not regiistrate what a well spoken language is - not even in their own language.
3. A language without learning some grammar is difficult, but possible.
Grammar can be a good guide to understand certain things.
4. Yes Swedes do speak English, but we do not as a rule speak English with oneanother.
5.No we usually do not converse with the other students in school. But I must admit that there is more conversation than maybe in other countries when learning a new language.
What helps in Scandinavia is that all films from other countries have subtitles.
That means we are used to hear a foreign language from childhood.
6. Lots of people study Latin and old Greek, and I know one person who could converse in Latin. He always wanted to meet someone he could converse with - it never happened. He was a pastor so he should have had a chance.
It is interesting that many Germans maintain it is easier to learn a foreign language if you know Latin. In Scandinavia that discussion stopped already in the 1920ies or a bit later. Scandinavians are better in speaking English than the Germans.