You should start with "Beginners and help" section on this forum and go through as many threads as possible. After, you have gained basic knowledge, you should move to other sections like " Bitcoin Discussion" and "Mining". In few days, you will have sufficient knowledge to start investing in crypto. Do not invest more than 20% of your savings for the first time and you should invest with the thought that you may loose all this money. Based on my experience, you should hold bitcoins for at least 8 months or more to get considerable returns.