Welcome on board @brotherhood.
Hope you enjoy your stay at Steemit. Good to know that you are a doctor and is interested in publishing content on photography and food.
My advice is whenever you post photos, include some description about the photo so that, people will appreciate the details and the post will be well received by others.
Feel free to interact with people and ask questions about any doubts to start with.
There are so many Discord channels which help new Steemians( GuideSteemit is one such channel and link is provided here: https://discord.gg/2ZUkm2f).
You can interact with people and post your posts for postpromotion, so that your post will get more exposure and whoever likes the content will appreciate your effort by rewarding with votes.
Keep writing good content and have a nice journey on Steemit.