I was wondering how you create items in the game "Both regular and magical"
Do you need a crafting skill for each type of object?
Mundane items are a craft skill.
Magic items are a feat + skill roll. It's complicated and there is a whole chapter devoted to it.
To expand a little:
Crafting a non-magical item involves having the appropriate craft skill, buying the materials, and spending time making the thing. To learn how to craft non-magical items, read the Craft skill in the Skills chapter.
Enchanting a magical item requires having the appropriate feat for the type of item, having a masterwork item to enchant, buying the materials, and spending time enchanting the thing. Most enchanters just buty a masterwork item to save time, but they COULD make it themselves which is just following the "Crafting a non-magical item" process I mentioned above. To learn how to enchant magical items, read the various sections (one for each item type) in the Magic Items chapter.
Once you have the appropriate magical crafting feat you can craft magic items of that type. As far as which skill is used for the checks for magical item crafting:
Armor - Spellcraft or Craft (armor).
Weapons - Spellcraft, Craft (bows) (for magic bows and arrows), or Craft (weapons) (for all other weapons).
Potions - Spellcraft or Craft (alchemy)
Rings - Spellcraft or Craft (jewelry)
Rods - Spellcraft, Craft (jewelry), Craft (sculptures), or Craft (weapons)
Scrolls - Spellcraft, Craft (calligraphy), or Profession (scribe)
Staves - Spellcraft, Craft (jewelry), Craft (sculptures), or Profession (woodcutter)
Wands - Spellcraft, Craft (jewelry), Craft (sculptures), or Profession (woodcutter)
Wondrous Items - Spellcraft or an applicable Craft or Profession skill check
You may notice a pattern there; Spellcraft can literally be used for all magical crafting checks regardless of what you are making. That pretty much means that investing in individual Craft skills is usually pointless unless you plan on doing lots of mundane crafting, and mundane crafting is very rarely worth the effort as such items are so inexpensive.
...That pretty much means that investing in individual Craft skills is usually pointless unless you plan on doing lots of mundane crafting, and mundane crafting is very rarely worth the effort as such items are so inexpensive.
More importantly, mundane crafting takes forever. It takes something like a week of flat out work to craft a Tanglefoot Bag. A wizard with a valet companion could craft a +5 Cloak of Resistance in that time. And they could do it from fairly low levels, too.
Mundanes CAN pick up 'Master Craftsman' after sinking 5 ranks into a Craft skill, so they can (eventually) get in on making things. At a penalty of one less feat and having to call in favours to avoid inevitable +5 DCs due to not having their own spells.
Still, sadly, Craft is not one of the more optimal skills for most classes.