• Some verbs are normally followed by an infinitive.

• Some verbs are normally followed by a gerund.

For basic exercises, go here.
(Englishpage.com)

• Some verbs can be followed by either one and have almost the same meaning.

• Some verbs will have a different meaning if you use a gerund or an infinitive.

To practice these, go to the bottom of this page.
(Englishpage.com)

• There are also rules about verbs that have prepositions after them, and rules that explain what to do if you have an object and a verb after another verb. Click here for an explanation and practice.
  (Englishpage.com)

1. ESL Video that teaches when
   to use Gerunds and Infinitives from Manythings.org)
2. Gerunds (from University of Victoria)

3. Gerunds and Infinitives (from University of Victoria)

4. Gerunds and Infinitives (Englisch-Hifen.de)

1. Gerunds vs. Infinitives Quiz 1 (eflnet.com)
2. Gerunds vs. Infinitives Quiz 2 (eflnet.com)
3. Gerunds vs. Infinitives Quiz 3 (eflnet.com)
4. Gerunds vs. Infinitives Quiz 4 (eflnet.com)
5. Gerund vs. Infinitive Quiz 5 (a4ESL.org)
6. More Gerund / Infinitive (Lilliam Hurst)
7. Gerunds vs. Infinitives (English Zone)