I cannot find anywhere on the web how to type the symbol for trademark (R with a circle around it). Can you help me. Thank you.

The basic symbols below will work with most text fonts. Also, in MS Word, under Insert>Symbols>Symbol, there is a TM insert that you can assign a shortcut key to.

Copyright (©) is Alt, 0, 1, 6, 9

Trademark (™) is Alt, 0, 1, 5, 3

Registered (®) is Alt, 0, 1, 7, 4

Bullet (•) is Alt, 0, 1, 4, 9

Ellipsis (... ) is Alt, 0, 1, 3, 3

"N" Dash (–) is Alt, 0, 1, 5, 0

"M" Dash (—) is Alt, 0, 1, 5, 1

Pound (£) is Alt 0, 1, 6, 3

Cents (¢) is Alt, 0, 1, 6, 2

One-half (½) is Alt, 0, 1, 8, 9

French accent (à) is Alt, 0, 2, 2, 4

French accent (ç) is Alt, 0, 2, 3, 1

French accent (è) is Alt, 0, 2, 3, 2

French accent (é) is Alt, 0, 2, 3, 3

French accent (ê) is Alt, 0, 2, 3, 4

German accent (ü) is Alt, 0, 2, 5, 2

Spanish accent (ñ) is Alt, 0, 2, 4, 1

To use the alt codes above you need to do it in the following order:
Press alt
Press and release each number in order on the NUMERIC KEYPAD. The normal numbers above the letters will not work.
Release alt

Also, if you intend to place these symbols in a webpage this is the wrong way to do it. It should be done using &code; as shown here Special HTML (ASCII ISO 8859-1) Characters