My first advice is to buy the very best tools you can afford. Make sure they are stainless steel, because you only have a small patch I would just stick to having a decent trowel and hand fork and a large fork for digging ATM. Think about getting decent secateurs if you think you will be doing any pruning. Get gardening gloves, I was given a hugely expensive pair that had very long gauntlets which were brilliant but are now worn down to holes, so I am currently buying dirt cheap ones but not expecting them to last ! Expensive ones will be going on my Christmas list. I don't wear gloves if I am planting, but do when I am digging or clearing Sorry to go on, but if you are just starting out it can be very frustrating if things don't work properly.
Plants. Great time of year to be starting out, bulbs are available, wallflowers and sweet William roots will be around soon to plant our for spring. Stick to tried and tested for bulbs, ie daffodils and tulips, grape hyacinths etc, catalogues can be too tempting with exotic and expensive stuff. Plant in clumps rather than singles, Beth Chatto always advised throwing a handful of bulbs down and plant them as they fell. She always advocated planting in odd numbers, so do handfuls of five or seven. If you are not sure how you want things to look eventually then plant them in pots so you can move them to more permanent places later. Start a herb garden as someone upthread suggested, quick return, very satisfying.
do not buy anything that is promoted as good ground cover. It is garden speak for something that will never be eradicated. Ivy, vinca, mind your own business, sweet woodruff....... Learn from my mistakes!
If you can visit other people's gardens, bit harder to do this year, but with any luck things should be better next year. The yellow book scheme is online and will tell you which gardens are open near to you. Read books about gardening, Beth Chatto as above, Christopher Lloyd, Margery Fish .Rosemary Verey, are my favourites, they know about gardening, garden design and they write very well.
Last of all get a compost bin or preferable two (your local council might have a cheap bin scheme) and start composting vegetable waste, clippings, grass cuttings, free horse poo from your local stables etc. With soil you get back what you put in.