<< Find "Spanish" under the library menu or on the homepage (if you're on a computer/larger device). You'll click on "VERBS" to practice just conjugations, but the other options below are useful as well. The "GRAMMAR" section is similar, but includes more grammar points than just verb conjugations - and it is within sentence context. It basically creates live worksheets which you can check for accuracy. The "LISTENING ACTIVITIES" section is a growing set of videos of people from various countries who speak on a variety of subjects. This is a great section to develop your 'ear' for understanding many different dialects of Spanish.
After clicking "VERBS" you can choose from the list of different verb tenses and moods. They are usually split up between regular, different irregular groups, and then all grouped back together.
<< I usually recommend you practice with the "Graded Practice Mode", but there are many other gaming options below as well. And, if you just want to see a bunch of the conjugation charts for that particular tense 'at a glance', click on "Conjugation Chart".
Once you click "Graded Practice Mode", you'll see the image to the right. You can click in the time box and adjust to whatever time you want to give yourself [red]. I usually recommend that you put a short time (1 - 2 minutes) - that way you can practice several times in a row to check your progress on accuracy quickly. The start/stop button is in the orange. The blue customize button allows you to choose how you want to be quizzed for the conjugations (i.e. full chart, one person at a time, leave out or include vosotros, etc.). The pink circle shows the text box where you will type your conjugations. It is important to note that the "+ Accent" button allows you to add accent marks as needed. You have to click that immediately following the letter that needs to be accented. Then, you can finish typing the word. The purple, of course, shows you who you are conjugating for, and which verb.
is a good site for practicing various grammar points in a fuller context. This site usually gives a lot of instruction and examples, in addition to practice opportunities.
Benefits of Wordreference: