In the image above, looking from the left toward the right, we see two kinds of scalpels, then two kinds of "pickups" or forceps and on the far right are scissors. In most cases, you are going to use forceps and scissors much more than the other. The second scalpel is unusual and is not a standard part of most student dissection kits. Not pictured are fine needles with wooden or plastic handles. These are handy for teasing apart organs to separate and identify them. They also can be used to tear through thin membranes that cover many internal organs.
These vendors are excellent providers of specimens, dissecting tools and dissecting guides. I would suggest that for any selection, compare prices and volume. If you are part of a school or home-school coop, there are cost advantages to ordering in bulk.
Biology Products: https://biologyproducts.com/
Carolina: https://www.carolina.com/
Home Science Tools - Biology: https://www.homesciencetools.com/biology/
For earthworm dissection: https://www.youtube.com/watch?v=8p-GAX4Xb2A
For mollusc (clam) dissection: https://www.youtube.com/watch?v=ADGkuX8IL9c
For sea star dissection (Pt. 1): https://www.youtube.com/watch?v=reOYYBf2G0w
(Pt. 2): https://www.youtube.com/watch?v=PZsvi-WCaVY
For squid dissection (male): https://www.youtube.com/watch?v=qaNrQrwlCQ4
Comparing male and female squid: https://www.youtube.com/watch?v=r-2iYtqS_EM
For octopus dissection: https://www.youtube.com/watch?v=sMvpQgYGg5Q
(Note comment on mistaken swap of mammalian iron-based hemoglobin and octopus copper-based)
For lamprey dissection: https://www.youtube.com/watch?v=X1tQGeEzAjI
For dogfish dissection (external): https://www.youtube.com/watch?v=BBfdzpdNh70
For dogfish dissection (internal): https://www.youtube.com/watch?v=6GbJWJ3Swsc
For perch dissection (external): https://www.youtube.com/watch?v=sgiVQG6eHfo
For perch dissection (internal): https://www.youtube.com/watch?v=g0kmj0NEImo
For frog* dissection (external): https://www.youtube.com/watch?v=Z2zPA-QzQgQ
For frog*dissection (internal): https://www.youtube.com/watch?v=5XU9KEIghCw
*I have stopped using amphibian dissections because of the rapid loss of amphibians worldwide.
See below for other options.
For pigeon dissection: https://www.youtube.com/watch?v=qE1woas-SrA
For anole lizard dissection: https://www.youtube.com/watch?v=vTKQV62tQe4
For fetal pig dissection: https://www.youtube.com/watch?v=1oM1TUMqN54