Turn on your computer and open your Internet browser.
Find an online source for learning. Many sites offer both free and payment required options for learning online. The BBC offers a free online program for learning Castilian, including verbs and grammar usage. Another free online site offering learning techniques and asynchronous help for learning Castilian is Busuu.
Research free blogs which offer Castilian language learning methods. These blogs often are a great way of not only learning the verbs, but also learning each verb's correct usage. Subscribe to the blog feeds so that you can vary your learning technique.
Download various podcasts. Repetition helps the learning process and aids in retention. Most podcasts are free; however, some require yearly or monthly membership fees.
Use all different online learning styles to ensure that you are not memorizing the verbs but actually learning how to understand and recognize them in various forms. Review verbs daily for better understanding.