Start small, a cup of tea or coffee and some biscuits. move on to light lunches: salad, nice bread and cheese or soup. For main meals serve the dish you most enjoy eating so probably are most comfortable cooking.
There is this vague belief that somehow if you ask friends around for a meal you need to impress them with your culinary expertise or serve very expensive food stuffs. That is rubbish. Inviting someone or people for a meal is done to enjoy their company, food is irrelevant. Invite them and order in fish and chips, nobody will mind.
The best hostess I ever knew who had the best dinner parties, over 25 years had only two menus. When times were good we got bought pate, roast beef, and bought deserts. When she was poorer we got lasagne instead of beef. Nobody noticed the food. No one turned down an invite she just collected a mish mash of friends plus her chaoitc personality and, I nearly forgot, an awful lot of red wine and we all had a wonderful time.
She died 10 years ago and I still miss her and her dinner parties.