Reddit reviews Natures Pressed Flower & Leaf Press 7 X 9 Nature Press (For Pressing Leaves & Flowers)

Get yourself a flower press. Something like this. Really you don't need anything special, absorbent paper and a couple of heavy books works just as well.

Next, and this is the hard part, find someone who knows plants in your area. Here in the states there are 'nature walks' where you'll spend an afternoon rambling around identifying plants and wildlife. Public garden tours are also a good option, but may not want you to take cuttings.

Collect cuttings by putting them in labeled baggies, go home and press cuttings, mount them when they are dry, label your mounted plants with the local and Latin names. Use them as flashcards.

I did this as a kid for a hobby and having more experiences with a plant besides a picture in a book really helped in memorization. (I climbed that steep hill, and this was in the rocks at the top, it tasted like lemon, that flavor comes from oxalic acid, it's oxalis alpina)

Perhaps something to do with flower pressing might be a good companion to a journal, I don't know a great deal about it but something like this kit might be nice, but it's out of stock on amazon at the moment, maybe you can find something similar?

Also these photo stickerbooks are pretty fun and would add a personal touch.