The Logos Finnish Verb Conjugator is a handy and free website for conjugating a variety of Finnish verbs for free online.
Also available is a Finnish learning conjugator for students first learning Finnish verbs.
Any sentence you attempt to form in a new language is almost surely going to contain at least one verb. For languages such as Finnish, learning to conjugate verbs is one of the most time-consuming and potentially tedious aspects of learning. There are irregular verbs along with standard verb patterns, and it can all get quite confusing fast.
With access to a free online Finnish verb conjugator and verb learning conjugator, you can quickly reference correct conjugations and test yourself on the most basic Finnish verbs.
Read my article about learning the most common verbs in your target language for a lot more in-depth information about verbs as related to language learning.
This book, which breaks down Finnish verbs and conjugation patterns as well as irregular verbs, is next-to-essential as a reference and go-to text for learning the language.