1st you will need a cow/heifer with a healthy cycling reproductive tract.
Having salt and good minerals available daily for a few months prior to and a month after breeding helps.
Many keep it available year round.
2nd you will need to have a place to safely catch and restrain her for insemination.
IF you are going to vaccinate and worm her then complete these tasks 4-8 weeks before breeding.
Cows need no special care while pregnant, but providing salt and minerals during the last trimester is a good idea.
At calving, observing from a distance is best.
If everything goes according to plan, allow the cow to care for her calf for 1/2 hour before approaching.
Approach cautiously as some cows may view you as an enemy after calving.
Watch to see if the calf is able to latch on to a teat, assist only if needed. Dipping the calf's navel in a mild iodine
solution a few hours or so after birth will help to prevent naval infections.
Buying a pair of bred cows might be the best way to get started as a beginner.