The YouTube channel is great for a few tips but just make sure you know each others hard and soft limits (basically what your willing to do and things you won't do). Find a safety word or action, some people use the traffic light system so green is good, yellow to either loosen things or be slightly more gentle and red to stop. You can also try other things such as a certain hand movement etc. Communication is key and making sure you go with an open mind. Bondage/bdsm/s&m are all different in certain aspects and you may want to try things out before steaming ahead. Being a dom I like to assert my authority but deep down it's all to please my partner.
But stick to the following: Safety is key so check rope etc is easy to untie Communicate at all times Never carry on when someone says stop or signals to stop Listen to your partners limits and stick to them Words can be more powerful than actions so find what turns your partner on.
These are the basics but if you search through the forums you will find plenty of tips to get things going!