Verbs followed either by -ing or infinitive with to with different meanings:
http://www.englishpage.com/gerunds/gerund_or_infinitive_different_list.htm

Verbs Followed by Gerunds OR Infinitives (Similar Meaning):

http://www.englishpage.com/gerunds/gerund_or_infinitive_same_list.htm

Exercises at http://www.englishpage.com/gerunds/part_3.htm