This is a large area of English grammar that requires study over a period of time. I recommend getting started by reviewing the information and exercises on English Page (http://www.englishpage.com/gerunds/part_1.htm). For reference, these forms are words based upon verbs but used as nouns in a sentence. Those that end in '-ing' are called 'gerunds' and those that begin with 'to' are called 'infinitives'. After reviewing this information and practicing on your own, I suggest scheduling a lesson with a teacher to receive further practice and feedback.

Here's a great link to help you understand when to use "to" and "ing" verbs :) http://www.eslcafe.com/grammar/verb_forms_and_tenses05.html I really hope that this helps :)

Here are some examples: Running (Run), Walking (Walk), Swimming (Swim), climbing (Climb), riding (Ride), cooking (cook), working (work). "I want to go to the store." "I am going to the store." "I will go to the store." "I went to the store."