There is the edit button you know

Anyhow, This is how I see those things.
Reknown Attribute determines how much of a liking NPC's take to you (If heroic, the other way round apply's if you are a villan)
Penetration is kind of like Anti Damge-Reduction, You know how say if you are trying to use martial arts on an iron monkey and you hit it, But not for any damage? Penetration helps you by skipping a bit of the armour.
Surgery skill is used by NPC's who can install Cybergear, JH has said that it works by the NPC making a roll VS the Trauma of a piece of cyberwear, If it succedes then you get the Cybergear with the same trauma rating, If it fails then you still get it, Only with more trauma, And if it rolls a 20 (in a figurative sense) then you can have as low as trauma 1!
Nature? No idea
Range? Its proberbaly the radius of effect for special effects, I.E the Preform skill
Arc? Sounds like Arc Thrusters
Armour Class is like a reserve health bar, Most weapons have to go through that to damage the real nuts and bolts.
Mass is how heavy something is, At SF:0 in GH1 one mass point is worth .5KG, I think that it should be changed.
Price is worked out automaticly by the GH program by tallying up the quality of a piece of gear and pricing it accordingly, You will never see a monstorus for $2.
Damage points is how much damage an item has taken VS how much it can take before it becomes non functional, For an example, The next time you are looking at a salvaged limb, Take a look in the top right corner - That will tell you how much DP it has taken VS how much it can take before it (and all its subsidiaries) stop working.
With regards to your character, Say your right arm is out of the piciture and you were using it to hold a laser rifle - You can no longer use the rifle so long as it is in that arm.
Hope that helps.