The most important thing to consider when you breastfeed is comfort - yours and the baby's.
Trying different positions, and changing when you need to, can help make the whole process easier and more successful.
Get ready for breastfeeding by sitting in a comfortable chair with armrests. Use as many pillows as you need to support your arms and back. Support your feet on a footstool (or anything that raises your feet and is comfortable), especially in the early weeks.