Recommendations

Users always ask "What should I use?". I recommend the following based on cost, ease of use, and ease of support.

Security software
#1 Bitdefender Internet Security $60 per year
Link http://www.bitdefender.com/solutions/internet-security.html
#2 Kaspersky Internet Security $50 per year
Link http://usa.kaspersky.com/products-services/home-computer-security/internet-security/

Productivity
#1 OpenOffice $Free
Link www.openoffice.org/
#2 Office $150
Link www.microsoftstore.com/store/msusa/en_US/pdp/Office-Home-Student-2016/productID.323023200/?vid=323801500

Web Browser
#1 Firefox $Free
Link www.mozilla.org/en-US/firefox/new/
#2 Internet Explorer $Free
Link www.microsoft.com/en-us/download/internet-explorer-11-for-windows-7-details.aspx

Operating System
#1 Windows 7 Professional $140
Link www.newegg.com/Product/Product.aspx?Item=N82E16832416804&cm_re=Windows_7_professional-_-32-416-804-_-Product
#2 Windows 10 Professional $140
Link www.newegg.com/Product/Product.aspx?Item=N82E16832588491&cm_re=Windows_7_professional-_-32-588-491-_-Product

Other recommendations

Free education
#1 Khan Academy - Kinder thru 8 math, science, programming, and more
Link www.khanacademy.org/
#2 edX - College courses
Link www.edx.org/
#3 Coursera - College courses
Link www.coursera.org/
#4 StarFall - Kids reading and math
Link www.starfall.com/

Video Games
#1 HumbleBundle - Bundle deal on a variety of games
Link www.humblebundle.com/survive-this-bundle
#2 Steam - Catalog of both indie and mainstream games
Link store.steampowered.com/