Assuming your end product is a digital image (i.e. not a paper print) the steps of your workflow are simple:

• develop the film
• scan the images

As for developing: it is important to consider Black & White and Color films as separate realms.

• black & white film is on one hand comparatively easy to develop - you need just three baths (developer / stop bath / fixer), the process is robust and easily done in DYI conditions. On the other hand the process has never been standardized. There are hundreds of developers, often optimized for a specific film make and choosing the "right" one involves as much art as science.
• color film (both reversal and negative) is comparatively more difficult to develop - still doable at home, but there is more chemistry involved and the tolerances are more tight. On the other hand the process has been standardized (E-6 for transparencies and C-41 for color negatives).

Most film photographers therefore develop their B&W film themselves, and send their color film to a lab.

As for scanning: there are broadly three options:

• a flatbed scanner, such as Epson V600 costing low hundreds of dollars (pounds) is something you can have at home (I do), but the resolution and dynamic range is somewhat limited.
• a high end CCD scanner, such as Hasselblad X5 costing tens of thousands of dollars (pounds) is not something you (or me) are likely to own, but with a little googling you should be able to find a processing service nearby that has one of these and will scan your negatives for you. The resolution and dynamic range is vastly improved over flatbeds, but the price and (in)convenience of having to send the negatives for the service means you will save this option only for special occasions.
• a wet mount drum scanner is the holy grail of film scanning. It gives the best resolution, and is the most hassle to operate. A fun fact is that many of these are available second hand, and with a little eBay luck you can get one for a relatively decent price. They are a chore to operate though, requiring you to install ancient interfaces (think Firewire).