> ## Documentation Index > Fetch the complete documentation index at: https://docs.binibit.com/llms.txt > Use this file to discover all available pages before exploring further. # 30 Lessons (Upgrade Cards) > The income engine: 30 lessons, 10 levels each, each upgrade boosts CRS/hour mining rate. See Tokenomics → Lessons for the cost and bonus formulas, milestones, and validation math. ## Structure ``` 30 lessons × 10 levels = 300 upgrade actions ``` Each lesson is a topic. Each level of a lesson costs more CRS and adds more CRS/hour to your mining rate. Maxing a lesson means taking it to L10. Maxing **all 30 lessons to L10** costs **230,000,000 CRS** total and brings you to **Level 10 / 24,000 USBI** (with welcome grant). ## What a lesson card looks like A lesson card has four parts: | Part | Purpose | | --------------- | --------------------------------------------- | | **Question** | The educational hook. "What's an order book?" | | **Answer** | One-paragraph explanation | | **Facts** | Three or four memorable bullets | | **Infographic** | Visual aid (image or animation) | | **Upgrade** | The CRS-spend button at the bottom | Reading the card teaches you something. Pressing Upgrade boosts your mining. ## Cost formula ``` lesson_upgrade_cost = baseCost × 1.217595 × 2^(lessonLevel - 1) ``` Each subsequent level **doubles** in cost. The `1.217595` global multiplier is calibrated so the sum of all 300 upgrades equals 230M CRS exactly. ## Bonus formula ``` lesson_bonus_per_hour = baseBonus × lessonLevel ``` A lesson at L10 produces 10× the per-hour bonus of the same lesson at L1. ## Aggregate milestones | Milestone | Cumulative cost | Total bonus/hr | 4h claim | 2 claims/day | Total USBI | | --------------- | --------------: | -------------: | -------: | -----------: | ---------: | | All lessons L1 | 224,829 CRS | 18,465 | 113,860 | 227,720 | 1,022 | | All lessons L3 | 1,573,803 CRS | 55,395 | 261,580 | 523,160 | 1,157 | | All lessons L5 | 6,969,697 CRS | 92,325 | 409,300 | 818,600 | 1,696 | | All lessons L7 | 28,553,275 CRS | 129,255 | 557,020 | 1,114,040 | 3,855 | | All lessons L10 | 230,000,000 CRS | 184,650 | 778,600 | 1,557,200 | 24,000 | ## Strategy — order of upgrades There is no single "right" order, but two general approaches work: ### Round-robin Take all 30 lessons to L1, then all to L2, then all to L3, etc. This produces the smoothest mining-rate growth. ### Domain-first Pick a topic you find most relevant to your trading style and max it before moving on. This produces faster early gains in one area but uneven mining-rate growth. The math is symmetric — you reach all-L10 at the same cost either way. The choice is about pacing, not optimization. ## What lessons are about The 30 lessons span trading, exchanges, DeFi, BiniChain, BaiDEX, agents, security, and tokenomics topics. The MiniLessons v4.0 spec defines the exact list. Examples: * "What's an order book?" * "How does an AMM differ from an order book?" * "What is a liquidity pool?" * "What's a launchpad?" * "How do agent-managed pools work?" * "What are token sinks?" A user who maxes all 30 lessons has read 30 short crypto explainers as a side effect of upgrading their mining. ## Spending CRS on lessons creates XP Every CRS spent on a lesson upgrade counts toward [XP](/tokenomics/xp-formula). Maxing all lessons gives you 230M XP — see [User Levels](/tokenomics/user-levels) to translate that into a level. ## Related Cost & bonus math What lesson bonuses boost Level 10 = all lessons L10 What XP unlocks