Do not open a condom packet carelessly. Fingernails, teeth or sharp objects can tear the condom. Check the expiration date. Old condoms are more prone to break. Use only water based lubricants, such as K-Y jelly not petroleum jelly or baby oil.
Many condoms come pre-lubricated.
For pleasure, ease, and effectiveness, both partners should know how to put on the condom. Put on the condom before any genital contact. Use a condom only once. Use a fresh one for each erection. Do not unroll the condom before putting it on.