Here is where I track what parts of the UCC I've encountered. Not extensive notes; just impressions.
SectionKey Concepts
1-103The regular old law of contracts pertains, "unless displaced by the particular provisions of [the UCC]." Is that excessively vague? Official comments make it seem like anything not mentioned is fair game.
1-105(1)Cases bearing a "reasonable relation" to two states can be resolved by laws of "this state" or an agreed-upon other state (i.e. chose your own law).
1-106Remedies are to be administered liberally, to preserve expectation interest; no consequential, special, or penal damages (i.e. compensatory damages are limited to compensation)
2-102Article 2 applies only to transactions in goods
2-105(1)What are goods
2-106Definitions of "contract," "sale," "cancellation" and some like terms
2-107(1)Minerals and structures, etc. are goods only if the seller severs them from property
2-107(2)Crops and timber are goods regardless of who severs
2-201(1)Statute of frauds for sales of goods; much looser than wills, real estate, etc.
2-501(1)The minute you are involved in a contract to buy something, you have a "security interest" in the goods you're buying
2-508When buyer rejects non-conforming goods, seller has right to cure (with reasonable time)
2-602A rejecting buyer has to inform the seller about the rejection
2-606Reasonable time to inspect goods before acceptance
2-703Protections for sellers in the event of non-performance by the buyer
2-704(2)When the goods to be sold are unfinished at the time of breach
2-706Direction for the re-sale of repudiated/non-accepted goods (auction, etc.)
2-708Protection of expectation interest for sellers
2-709Action (by seller) for the price of goods when buyer fails to pay (only for goods accepted or damaged, incidental damages, etc., of course). Payment entitles buyer to the goods, etc.
2-710Defines incidental damages incurred by aggrieved sellers
2-711Buyer's remedies (incl. replevin of goods), when seller breaches; "right to cover"
2-712Buyer can "cover" (e.g. from another vendor) seller's breach and then get the difference as damages
2-713Buyer can also get as damages what cover would have cost
2-714Similar to §2-712, but if the goods are simply non-conforming to the contract
2-715(1)Incidental damages for buyer (expenses, commercially reasonable chares, commissions, etc., associated with cover).
2-715(2)Consequential damages limited to buyer's requirements that the seller had reasonable cause to know, and could not reasonably have prevented; also injury if warranty is breached. This is a codification of the Hadley v. Baxendale rule, sort of. Remedies can be contractually limited (Comment 3) and there's consideration of whether needs are "general" or "particular," with respect to the expectation that the seller would know them.
2-716Specific performance is an option where goods are unique (or analogous); may include price, damages, etc. Buyer can replevin goods in order to cover if other reasonable efforts fail
2-718(2)Limitations on damages, liquidation of damages