Condoms are extremely safe.. Be sure to use them properly and don't use oil-based lubes that can cause the condom to weaken and break - only water- or silicone-based. The only risk for HIV while using condoms is if a condom breaks, but consistently using good-quality condoms correctly will help you avoid that risk.
No, you will not get HIV from giving oral sex. Just make sure to use a condom for penetrative vaginal or anal sex and you'll be fine.