Welcome to A Polychromatic World!

This pack is different than what you may be used to, with technological mods being hard to reach.

To start with this pack, you will need to go through the Iguana Tinkers' Tweaks progression.
This is basically the following:
§8Flint§r -> §6Copper§r -> §7Iron§r -> §6Bronze§r -> §bDiamond Tipped Tools§r -> §dAlumite§r -> §4Ardite§r -> §1Cobalt§r/§5Manyullyn§r

This will allow you to mine all materials in the pack, which means you won't have to come back to the progression again.

However, this may prove to be easier said than done, as the smeltery, which is needed to start making copper tools, is gated behind Mariculture and needs Aluminum.
In order to process Aluminum, you will need to set up a system with a Mariculture Crucible Furnace (two blocks stacked on top of each other, with an optional Copper Tank filled with lava below them), 
either a Seared Faucet or a Ladle to transfer fluid out of the Crucible Furnace, a Vat for alloying, and finally a Casting Table from Tinkers' Construct.

With these you can not only process Aluminum, but also get your first few metal tools (Aluminum Brass for casts can be made in the vat).

It is highly recommended that you at least get diamond tipped tools before progressing to other mods.