Starting with cryptocurrency does not require thousands of dollars. Bitcoin and Ethereum are divisible, so a beginner with USD 100 can buy fractions of a coin. The challenge is using that amount efficiently while controlling fees and risk.

Crypto can move sharply within hours, and some tokens can lose most of their value. The USD 100 should be money an investor can afford to lose, not essential funds.

Scams are another growing risk. The FTC reported more than USD 7.9 billion in investment-scam losses in 2025, with a median reported loss above USD 10,000. That makes platform verification important.

First-time investors mostly trade crypto via an exchange or brokerage that accepts fiat currency. It is a good idea to compare transaction fees, spreads, withdrawal costs, asset options offered, and security features before making a deposit. 

Small portfolio investments are particularly sensitive to charges. A 1% charge on an investment of USD 100 equals USD 1. Buying, converting, and withdrawing funds may therefore take away a notable portion of the original investment.

Rather than dividing USD 100 among many speculative tokens, beginners can first research established assets such as Bitcoin and Ethereum.

A token priced at USD 0.01 is not necessarily cheaper than Bitcoin. Market capitalization, calculated by multiplying price by circulating supply, provides more context than unit price alone. A simple one-or-two-asset approach can also be easier to understand and monitor over time. 

The entire USD 100 does not need to enter the market immediately. It could be divided into four USD 25 purchases made at regular intervals.

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