I'm afraid I can't answer eveyone's questions individually, but here are my answers to some that people have asked me over the last week:
1. Should we give essays a title?
No, your essays don't need titles, so don't waste time inventing one.
2. Can I use the words plunge, plummet, rocket and soar in writing task 1?
Personally, I wouldn't use those words because they usually seem too exaggerated, and make it look like you have simply learnt a list of synonyms. Have a look through my essays to see how I describe numbers.
3. Should I start new paragraphs by missing a line or with an indentation?
Both ways are fine, but I think it's clearer if you miss a line.
4. Can I ask the examiner about difficult vocabulary in the speaking test?
The examiner cannot help you in part 1 or 2, but you can ask him/her to clarify a question in part 3.
5. Is it ok to use the phrase 'due to the fact that' instead of 'because'?
Yes, it's fine, but don't repeat it more than once or twice.
6. Is it necessary to give (personal) examples in writing task 2?
The question usually tells you to "include any relevant examples from your own knowledge or experience". I interpret this to mean that you can include personal examples if they are relevant, but you don't have to.