Font Spacing Help

I’m very new at creating fonts. I started to create my first font using my handwriting last night. I used http://www.myfirstfont.com to help me, but I seem to be having some problems when I test my font. The letters are not spaced correctly; some overlap,while others are inches apart. Additionally, when I add a space between words, it is very small. I don’t know what to do to fix this. I would appreciate if someone could help me solve this problem. Thank you.
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You have to adjust the left and right side bearings. With the professional edition you get superior results with the optical metrics features:
http://www.high-logic.com/fontcreator/manual8/autometrics_metrics.html

I’m sorry. I am very unsure on how to do this. I am confused on what the bearings are.

Just drag the dotted side-bearing lines.

See this post in the FAQ for an illustration.

I figured out how to do it using autometrics. Thanks for all of the help!