Photo Transfer

Set up both devices to use the same Apple ID and enable iCloud on both iPhone and MacBook Air. They will sync back and forth, example photos on iCloud from iPhone will automatic sync to Photos App on MBA

Take the time to read the linked document and if still have questions - come on back to these forums and post the question. There are many very Tech savvy persons who will gladly assist. Just be clear and try as best as possible to give as much details of equipment versions of iOS, macOS

Yes, using iTunes and physically connecting the iPhone to computer. This article should provide the guidance