The Biostar Handbook. A bioinformatics e-book for beginners.; How Did You Learn Good Practice In Bioinformatics/Computational Biology? ; Advice For Newcomers To The Bioinformatics Field ; Recommend Your Favorite Bioinformatics Books ; Web Based Interactive Resources To Learn Programming And/Or Bioinformatics ; Undergraduate Bioinformatics Textbook? ; How to self-study (get onto) Bioinformatics and Data Analysis for Genomic, for working with real life genomics data? ; etc... etc...

Pierre has listed a ton of posts - please remember that you need to do more digging around before creating your post. This is a bioinformatics forums, it's pretty obvious that there must be one if not many posts that address your issue (which is pretty common).