If you have a technical company, certainly become as familiar with that technology as possible. However, recognize that it takes a lot of talent and experience to become a great developer, and if you don't have it already you are unlikely to be able to magic that up on your own just by doing a few tutorials. The best way to acquire that skillset is to buy it, with money or equity or both.

Edit: note that attaining a reasonable level of skill in technical matters will pay huge dividends, especially in hiring. There are currently no objective measures for determining developer skill. The better your technological chops are the better you will be at determining the skill of potential employees / co-founders. Making sure your startup is populated by the most skilled engineers can make all the difference between success and failure.