This is a quick share of my favorite tools for tildes , accents and even symbols for currency.
#1 The TYPEIT program works off and online and includes the IPA or International Phonetic Alphabet. TypeIt will select, copy/paste the letter that you need.
#2 StudySpanish.com is also very helpful and simple to use.
#3 Starr.Net helps a lot with keyboard shortcuts on laptops as well:
#4 Lexilogos helps with French character tools!
Here is the Mac shortcut to tildes and marks in L2.
For Windows: ->All Programs -> Accessories ->System Tools -> Character Map
Windows ALT codes
Retrieved from: http://symbolcodes.tlt.psu.edu/accents/codealt.html#accent
Latin-I codes (Windows) Retrieved from: http://www.w3.org/TR/REC-html32.html#latin1
ASCII (American Standard Code for Information Interchange) shortcut table