Good quality fabric scissors are necessary to cut out your toiles and garments. Make sure you don't use your fabric scissors to cut cardboard or paper, and try not to drop them.
Standard paper scissors can be used to cut out your blocks and patterns from cardboard, paper and tissue paper.
If you need to cut fabric and paper together, e.g. for finer and hard-to-handle fabric, it is best to have a pair of fabric scissors particularly for that purpose and keep your best fabric scissors for fabric only.
If you are making your own patterns, one option is to use vilene instead of paper. When cutting out the pattern pieces from the Vilene - don't cut ot the edge; leave a border so that when you are cutting out the fabric, you are cutting through both the vilene and the fabric together.