Please use google and the search function to find tutorials, blogs and papers that will guide you. The Biostars Handbook might be worth looking at as well but it must be purchased.

The Biostar Handbook. A bioinformatics e-book for beginners.

Start by learning how to ask good questions:

Long version - How To Ask Good Questions On Technical And Scientific Forums

Short version - Brief Reminder On How To Ask A Good Question

As for learning bioinformatics, there are many, many resources, as free courses on Coursera, free and paid books, and plenty of tutorials around. For genome assembly, for example, the first two hits for searching for genome assembly tutorial were:

De novo Genome Assembly for Illumina Data

Introduction to Genome Assembly